package net_TCP;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: qian
 * Date: 2023-02-18
 * Time: 18:11
 */
public class TcpEchoClient {
    private Socket socket=null;
    public TcpEchoClient(String serverIP,int serverPort) throws IOException {
        //使用socket与服务器建立连接
        socket=new Socket(serverIP,serverPort);
    }

    public void start(){
        Scanner scanner = new Scanner(System.in);
        try (InputStream inputStream= socket.getInputStream();
             OutputStream outputStream= socket.getOutputStream()
        ) {
            while (true) {
                //1.从控制台读取数据，构造一个请求
                System.out.println("-> ");
                String request = scanner.next();
                //2.发送请求给服务器
                PrintWriter printWriter=new PrintWriter(outputStream);
                printWriter.println(request);
                printWriter.flush();
                //3.从服务器读取响应
                Scanner respScanner=new Scanner(inputStream);
                String response=respScanner.next();
                //4.把响应显示到界面上
                System.out.println(response);
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) throws IOException {
        TcpEchoClient client=new TcpEchoClient("127.0.0.1",9090);
        client.start();
    }
}
